CCamelOT allows you to derive inputs by applying an OT-CC grammar to them.
Take the quick guided tour to see how.

The inputs are real (i.e. made out of features, prosodic structure, and morphological structure). CCamelOT creates the candidates for you, and tells you who the winner is. You can change the ranking online and see how the candidates and winners change.

If you register, you can post your inputs and rankings. You can post publicly, and share the information with colleagues and students. You can post privately for your own enjoyment.